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Shreebond IBU-663 – Flexible Isobutylated Urea Formaldehyde Resin for Durable Coil and Metal Coatings

Shreebond IBU-663 – Flexible Isobutylated Urea Formaldehyde Resin for Durable Coil and Metal Coatings

SHREEBOND IBU-663 is a high-flexibility isobutylated urea formaldehyde resin, specifically engineered for thermosetting systems that demand excellent formability, chemical resistance, and film integrity. It’s ideally suited for coil coatings, can and drum linings, metal primers, and flexible industrial coatings.

With a tailored structure for improved flexibility, IBU-663 enables coatings to withstand post-forming operations like bending, rolling, and stamping—without cracking or losing adhesion.

Technical Specifications

  • Appearance: Clear to pale yellow liquid

  • Non-Volatile Content: 58 ± 2%

  • Viscosity @ 25°C: 250–550 cps

  • Free Formaldehyde: ≤0.5%

  • Specific Gravity @ 25°C: ~1.09–1.11 g/cm³

  • Solubility: Soluble in alcohols, esters, ketones, aromatics

  • Shelf Life: 12 months in sealed original container under ambient storage


Key Benefits

  • High film flexibility without sacrificing chemical resistance

  • Ideal for post-forming and deep-draw applications

  • Produces smooth, defect-free films with excellent surface clarity

  • Compatible with most alkyd, acrylic, and polyester systems

  • Designed for low-VOC and high-solids formulations


Applications

  • Flexible Coil Coatings (topcoats and backing coats)

  • Drum Linings and Metal Packaging

  • Industrial Finishes on Formable Substrates

  • Appliance Coatings

  • General-Purpose Decorative Coatings

Typical use level: 10–25% by weight, depending on system requirements.


Packaging

  • 200 kg HDPE or MS drums

  • IBC totes or ISO tanks for larger volume customers

  • Custom and export packaging options available